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Finding the Fourth Proportional to 108,474.78, 162,651.26 and 74,319.11

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Solution

The fourth proportional to 108,474.78, 162,651.26 and 74,319.11 is: 111,436.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,474.78 : 162,651.26 = 74,319.11 : x
  2. Step 2: Convert to fraction form
    108,474.78/162,651.26 = 74,319.11/x
  3. Step 3: Cross multiply
    108,474.78x = 162,651.26 × 74,319.11
  4. Step 4: Simplify right side
    108,474.78x = 12,088,095,698.73
  5. Step 5: Solve for x
    x = 12,088,095,698.73/108,474.78
  6. Step 6: Final answer
    x = 111,436.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.